As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. 5° P 30 kg 20°

International Edition---engineering Mechanics: Statics, 4th Edition
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ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
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As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. Note: please show step by step working out. Also double check final answer please. As this is a dynamic question. Please use sine rule to solve this. Thanks
As shown in the figure, the coefficient of
static friction for both wedge surfaces is
0.4 and that between the 30-kg concrete
block and the 20° incline is 0.70.
Determine the minimum value of the force
P required to begin moving the block
down the incline. Neglect the weight of the
wedge.
5°
P
30 kg
20°
Transcribed Image Text:As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. 5° P 30 kg 20°
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